USD287621SExpiredUtility

Clean air work station

38
Assignee: ENV AIR CONTROL INCPriority: Apr 12, 1984Filed: Apr 12, 1984Granted: Jan 6, 1987
Est. expiryApr 12, 2004(expired)· nominal 20-yr term from priority
Inventors:William Shields
38
PatentIndex Score
3
Cited by
14
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a clean air work station, as shown and described.

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